WO2012000339A1

WO2012000339A1 - Cordless magnetic base drill

Info

Publication number: WO2012000339A1
Application number: PCT/CN2011/072737
Authority: WO
Inventors: 伍德斯·尼尔斯·雅各
Original assignee: Woelders Niels Jacob
Priority date: 2010-07-01
Filing date: 2011-04-13
Publication date: 2012-01-05
Also published as: CN101890520B; US20130108385A1; CN101890520A; EP2554307B1; EP2554307A4; EP2554307A1

Abstract

A cordless magnetic base drill is disclosed. The drill comprises a control unit (1), a motor (2) which is connected with the control unit (1), a gear box (3) which is connected with the motor (2), a power source (4) which is connected with the control unit (1), and a magnetic base (5). The gear box (3) regulates the output rotation speed of the motor (2). The power source (4) supplies power to the motor (2). The magnetic base (5) can be an electromagnetic chuck, an electric permanent magnetic chuck, a permanent magnetic chuck, or the combination of a permanent magnetic chuck and an electromagnetic chuck. The control unit (1) controls the operations of the motor (2) and the power source (4) and establishes or cuts off the connection between the power source (4) and the motor (2).

Description

Cordless magnetic drill

The invention relates to a magnetic drill, in particular to a cordless magnetic drill. Background technique

Magnetic drills have been widely used in various fields such as steel structure processing, shipbuilding, bridge engineering, petroleum engineering, power plant maintenance, and railway construction. So far, all magnetic drills available on the market are corded, that is, the magnetic drills must be connected to an external power source through wires, or they can be connected to the air pump through the air supply pipe. The power required to operate is provided. Therefore, in the working environment of the magnetic drill, not only need to additionally provide space for the installation of the external power source, but also need to connect the electric wire or the air supply pipe between the working position of the magnetic drill and the external power source. When the working environment is complicated, it is difficult to ensure the safety of use. For example, when working at height, it is often difficult to place the external power source at such a height, and it is necessary to set a relatively long wire or air supply pipe. Inconvenience, it is also easy to cause danger in the running state of the magnetic drill; when working in a humid environment, the complex power supply lines required for the magnetic drills are more likely to cause danger during the use of the magnetic drill. . It can be seen that the existing corded magnetic drill has not only great limitations in practical use, but also its use safety is also insufficient. Summary of the invention

The technical problem to be solved by the present invention is to overcome the drawbacks of the prior art that the corded magnetic drill has large limitations and low safety, and provides a cordless magnetic drill which is easy to use and extremely safe.

The present invention solves the above technical problems by the following technical solutions: A cordless magnetic drill, characterized in that it comprises: a control unit; a motor connected to the control unit; a gearbox connected to the motor, Adjusting an output speed of the motor; a power source coupled to the control unit for powering the motor; a magnetic base coupled to the control unit; the control unit for the motor, the power source, and the magnetic seat The operation is controlled and used to establish or disconnect the connection between the power source and the motor.

Preferably, the magnetic base is an electromagnetic chuck, and the power source is further used to power the electromagnetic chuck. Preferably, the control unit is configured to cut off the power source and the power when the power source is exhausted A connection between the machines, and/or, issues a warning.

Preferably, the control unit is configured to cut off the connection between the power source and the motor when the power source energy is exhausted, and reduce the operating voltage of the electromagnetic chuck to maintain the cordless magnetic drill on the working surface. The minimum voltage required, and / or, issued a warning.

Preferably, the cordless magnetic drill further includes a power source controller connected to the power source for cutting off the power output of the power source when the power source is abnormal, and the protection unit is further provided with a protection module. When the power source is operating abnormally, the connection between the power source and the motor is cut off before the power source controller is operated, and/or a warning is issued.

Preferably, the cordless magnetic drill further includes a power source controller connected to the power source and the control unit, configured to acquire an operating state of the power source and transmit to the control unit, and the control unit is configured according to the operating state And disconnecting the power source from the motor when the power source is abnormal, and/or issuing a warning.

Preferably, the cordless magnetic drill further includes a backup power source connected to the control unit for supplying power to the electromagnetic chuck, and the control unit is configured to control the standby when the power source is abnormally operated or energy is exhausted. The power source supplies power to the electromagnetic chuck and/or issues a warning.

Preferably, the control unit is configured to control the standby power source to supply power to the electromagnetic chuck, cut off the connection of the power source to the motor, and/or generate a power when the power source is abnormal or the energy is exhausted.

3 Lilu Tudou.

Preferably, the control unit controls the power source to replenish the backup power source, or uses an external power source to supplement the backup power source.

Preferably, the backup power source is a combination of one or more of the following power sources: lithium-based battery, nickel-cadmium battery, nickel-hydrogen battery, nickel battery, fuel cell.

Preferably, the magnetic base is an electric permanent magnet chuck.

Preferably, the cordless magnetic drill further includes a power source controller coupled to the power source for shutting off the power output of the power source when the power source operates abnormally.

Preferably, the cordless magnetic drill further includes a power source sensor connected to the power source and the control unit, for acquiring an operating state of the power source and transmitting to the control unit, the control unit root According to the operating state, the connection between the power source and the motor is cut off when the power source operates abnormally, and/or a warning is issued.

Preferably, the cordless magnetic drill further includes a magnetic field sensor connected to the control unit for acquiring an operating state of the magnetic base and transmitting to the control unit, the control unit is configured to be in the magnetic base according to the operating state When the magnetic field is insufficient, the connection between the power source and the motor is prevented, or the connection between the power source and the motor is cut off, and/or a warning is issued.

Preferably, the cordless magnetic drill also includes a mechanical safety device for securing the cordless magnetic drill to the work surface.

Preferably, the power source is a combination of one or more of the following power sources: a lithium-based battery, a nickel-cadmium battery, a nickel-hydrogen battery, a nickel battery, and a fuel battery.

Preferably, the control unit has a human-computer interaction interface for the operator to input control commands to the control unit and to issue an alert to the operator when the cordless magnetic drill is working abnormally.

Another technical solution of the present invention is: a cordless magnetic drill, characterized in that it comprises: a control unit; a motor connected to the control unit; a gearbox connected to the motor for adjusting the output speed of the motor a power source coupled to the control unit for powering the motor; a permanent magnet chuck; the control unit for controlling operation of the motor and the power source, and for establishing or cutting the power source and the motor The connection between.

Preferably, the cordless magnetic drill further includes a magnetic field sensor connected to the control unit for acquiring an operating state of the permanent magnet chuck and transmitting to the control unit, wherein the control unit is configured to When the magnetic field of the magnetic chuck is insufficient, the connection between the power source and the motor is prevented, or the connection between the power source and the motor is cut off, and/or a warning is issued.

Preferably, the cordless magnetic drill also includes an electromagnetic chuck coupled to the control unit, the control unit further for controlling operation of the electromagnetic chuck, the power source further for providing power to the electromagnetic chuck.

Preferably, the cordless magnetic drill further includes a magnetic field sensor connected to the control unit for acquiring the permanent magnet chuck and the operating state of the electromagnetic chuck and transmitting to the control unit, the control unit is configured to be used according to the operating state And when the permanent magnet chuck and the superimposed magnetic field of the electromagnetic chuck are insufficient, the connection between the power source and the motor is prevented, or the connection between the power source and the motor is cut off, and/or a warning is issued.

Preferably, the cordless magnetic drill further includes a power source controller coupled to the power source for shutting off the power output of the power source when the power source operates abnormally. Preferably, the cordless magnetic drill further includes a power source controller connected to the power source and the control unit, configured to acquire an operating state of the power source and transmit to the control unit, and the control unit is configured according to the operating state And disconnecting the power source from the motor when the power source is abnormal, and/or issuing a warning.

Preferably, the cordless magnetic drill further includes a power source sensor connected to the power source and the control unit, for acquiring an operating state of the power source and transmitting to the control unit, according to the operating state, The connection between the power source and the motor is cut off when the power source is operating abnormally, and/or a warning is issued.

The positive progressive effect of the present invention is that: the cordless magnetic base drill collar of the present invention uses a portable cordless power source, thereby eliminating the need for an external power source and an electric wire or air supply pipe, and the magnetic drill is made of the existing one. Rope-type structure improvement For the cordless structure, this improvement overcomes various defects of the existing corded magnetic drill, filling the market gap, so that the cordless magnetic drill of the present invention is no longer externally connected during use. The limitation of the power source improves the safety of the use on the one hand, and greatly improves the convenience of use of the magnetic drill on the other hand, which can perform various difficult drills under any work place without being affected by the working environment. Cutting work helps to improve work efficiency and simplify work processes. In addition, since the cordless magnetic base drill is a portable cordless power source, in order to avoid the power output of the power source being completely cut off when the power source is exhausted or due to abnormal operation of the cordless magnetic drill. When the cordless magnetic drill loses power and the magnetic field disappears, it slips or even falls from the working surface, thereby causing danger. The present invention also improves the design of the magnetic base of the cordless magnetic drill, and is available in various options. The manner of ensuring that the magnetic base can reliably adsorb the cordless magnetic drill to the working surface reliably, so as to avoid unnecessary use danger to the operator, thereby further the cordless magnetic drill of the present invention The use of security has increased to a level that is trustworthy. DRAWINGS

1 is a structural block diagram of the cordless magnetic drill according to the present invention. Figure 2 is a block diagram showing the structure of the first embodiment of the cordless magnetic drill according to the present invention.

Figure 3 is a block diagram showing the structure of a second embodiment of the cordless magnetic drill according to the present invention.

Figure 4 is a block diagram showing the structure of a third embodiment of the cordless magnetic drill according to the present invention.

Figure 5 is a block diagram showing the structure of a fourth embodiment of the cordless magnetic drill according to the present invention. detailed description

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. As shown in FIG. 1 , the cordless magnetic drill in this embodiment comprises: a control unit 1 , which is a central control module of the cordless magnetic drill, and is used for the cordless magnetic base according to an operator's control instruction. Each of the necessary modules in the drill and each of the optional modules are uniformly controlled; a motor 2 connected to the control unit 1 is used as a rotary drive module for various types of drilling tools assembled on the cordless magnetic seat; The motor 2 is connected to a gearbox 3 for adjusting the output speed of the motor 2 to a suitable rotational speed required for actual operation, so that the drilling tool can ideally drill the workpiece at the appropriate rotational speed. a power source 4 connected to the control unit 1, the power source 4 being a portable cordless power source that can provide power to the motor 2, but whether the actual connection between the power source 4 and the motor 2 is Control of the control unit 1, which will be described in detail below; a magnetic base 5, the magnetic base 5 reliably adsorbs the cordless magnetic drill to the working surface by its magnetic field The magnetic base 5 can be selected from an electromagnetic chuck, an electric permanent magnet sucker, a permanent magnet sucker or a permanent magnet sucker and an electromagnetic chuck. In the case of selecting an electromagnetic chuck and an electric permanent magnet chuck, the magnetic base 5 and the control The unit 1 is connected. In the case of selecting a permanent magnet chuck, the magnetic base 5 will not be connected to the control unit 1. In the case of using a combination of a permanent magnet chuck and an electromagnetic chuck, the permanent magnet chuck in the magnetic base 5 is not The control unit 1 is connected to the control unit 1 and the electromagnetic chuck is connected to the control unit 1. The various aspects described above will be described in detail below through various embodiments. The control unit 1 may also have a human-computer interaction interface, for example: a few simple switches for the operator to control the cordless magnetic drill, and several simple indications reflecting the operating state of the cordless magnetic drill Or the human-computer interaction interface can also be a relatively complicated control panel, and the control panel can even have a display screen to display the running state of the cordless magnetic drill in real time for the operator to monitor, and The operator can also input a control command to the control unit 1 through the control panel to control the operation of the cordless magnetic drill. In particular, the control unit 1 can also have an alarm function to drill in the cordless magnetic seat. When the work is abnormal, the operator promptly sends a warning prompt through the human-computer interaction interface.

Example 1 As shown in Fig. 1, in this embodiment, the magnetic base 5 uses an electromagnetic chuck 5a, and the power source 4 is used to supply the electromagnetic chuck 5a with power for generating a magnetic field. When the cordless magnetic drill is ready to start work and the operation is completed, the control unit 1 separately establishes and cuts the coupling between the power source 4 and the electromagnetic chuck 5a to generate or eliminate the magnetic field of the electromagnetic chuck 5a. During the use of the cordless magnetic drill, the power source 4 is continuously coupled with the electromagnetic chuck 5a, thereby ensuring the adsorption reliability of the cordless magnetic drill.

When the energy of the power source 4 is about to be exhausted, the control unit 1 can be completely eliminated in the motor 2 in order to prevent the cordless magnetic drill from slipping or falling from the working surface due to the sudden loss of the electromagnetic chuck 5a. Before the power of the power source 4 is exhausted, the coupling between the power source 4 and the motor 1 is cut off in advance, so that the electromagnetic chuck 5a can still continue to operate by the remaining power of the power source 4, and even the electromagnetic chuck can be lowered. The working voltage of 5a is sufficient as long as the adsorption force is sufficient to maintain the cordless magnetic drill on the working surface, thereby reducing the energy consumption of the electromagnetic chuck 5a and maintaining its magnetic field for a longer period of time. Alternatively, the control unit 1 can also issue a warning through the human-computer interaction interface to prompt the operator that the power of the power source 4 is insufficient, so that the operator can timely move the cordless magnetic base drill to a safe position where the fall does not occur. , and replace or refill the power source 4. Alternatively, the control unit 1 can also issue a warning through the human-machine interface while disconnecting the power source 4 from the motor 1.

In this embodiment, the portable cordless power source 4 can use various lithium-based batteries such as a ternary lithium battery and a lithium iron phosphate battery; a fuel cell; a nickel cadmium battery, a nickel hydride battery, a nickel battery, and the like. ; and a variety of other mobile power sources. For some types of power sources, for protection, life and other reasons, it is necessary to carry out various protection measures such as overload protection, low voltage protection, overheat protection, etc., therefore, when the power source 4 of the present invention uses protection to be protected In the case of the power source, a power source controller or a power source sensor (not shown) may be added to the power source 4 as needed, and the case where the two modules are separately installed will be described below.

When the power source controller is used, the power source controller can automatically perform a protection action on the power source 4 according to the operating state of the power source 4, since the protection action may suddenly cause all of the power source 4 The power output is cut off, and this will cause the electromagnetic chuck 5a to be de-energized to lose the adsorption force, thereby causing the cordless magnetic drill to slip off or fall from the work surface, and the power source controller is set for safety considerations. In this case, the control unit 1 must be able to react to the abnormal condition of the power source 4 before the power source controller cuts off the entire power output of the power source 4, for example, cutting off the power source 4 and the motor. a connection between 2 to prevent the power source 4 from reaching The power source controller protects the wide value and cuts off all of the power output, thereby retaining sufficient power so that the electromagnetic chuck 5a can continue to be adsorbed on the work surface, providing the operator with sufficient processing time, and possibly even because The connection between the power source 4 and the motor 1 is cut off, thereby reducing the load of the power source 4, and directly eliminating the abnormal condition of the power source 4; or the control unit 1 can also pass the human-machine interaction interface. A warning is issued to prompt the operator to timely handle the abnormal condition of the power source 4; alternatively, the control unit 1 can also issue a warning while cutting off the connection between the power source 4 and the motor 1. Specifically, for example, when the power source 4 is overload protected by the power source controller, an overload protection module needs to be correspondingly designed in the control unit, and the preset overload protection current threshold of the overload protection module should be low. The preset overload protection current threshold of the power source controller, and the reaction time of the overload protection module to protect the overload phenomenon should also be less than the reaction time of the power source controller, thereby, when the power source

4 When an overload occurs, the control unit 1 cuts off the connection between the power source 4 and the motor 2 before the power source controller makes a protection action, and/or sends the operator to the operator through the human-machine interaction interface. The overload warning; when the power source 4 is low-voltage protected by the power source controller, the control unit needs to be correspondingly designed with a low-voltage protection module, and the preset low-voltage protection voltage threshold of the low-voltage protection module should be higher than The power source controller presets a low voltage protection voltage threshold, and the reaction time of the low voltage protection module to protect the low voltage phenomenon should also be less than the reaction time of the power source controller, thereby, when the power source 4 voltage When it is too low, the control unit 1 cuts off the connection between the power source 4 and the motor 2 before the power source controller makes a protection action, and/or sends a low voltage to the operator through the human-machine interaction interface. Warning; when the power source 4 is overheat protected by the power source controller, the control unit needs to be correspondingly designed with an overheat protection mode And, the preset overheat protection temperature threshold of the overheat protection module should be lower than the preset overheat protection temperature threshold of the power source controller, and the reaction time of the overheat protection module to protect against overheating should also be less than The reaction time of the power source controller, whereby when the power source 4 is overheated, the control unit 1 cuts off between the power source 4 and the motor 2 before the power source controller performs a protection action. Connected, and/or, sends an overheat warning to the operator through the human-machine interface.

When the power source sensor is used, the power source sensor is connected to the power source 4 and the control unit 1, and can detect the operating state of the power source 4, and transmit the operating state data to the control unit 1 Processing, and the control unit 1 can determine the operating state data, and when the power source 4 experiences various abnormal conditions such as overload, low pressure, overheating, etc., the power source 4 and the motor 2 are cut off in time. Coupling to protect the power source 4, And/or, the control unit 1 can also send an alert to the operator through the human-machine interaction interface; when performing the protection action, the electromagnetic chuck 5a can still maintain the adsorption on the working surface, thereby providing the operator with sufficient Handling time to avoid a safety accident due to sudden slippage or falling of the cordless magnetic drill. In addition, it should be noted that even in the case where the power source controller is used instead of the power source sensor, the power source controller can perform the same function as the power source sensor, that is, the probe acquires the power source 4 The operating state, and the control unit 1 performs the same subsequent processing on the running state data as described above.

In order to further improve the safety of use of the cordless magnetic drill, it is also possible to add a backup power source 6 connected to the control unit 1, and the backup power source 6 is used for the power source 4 to be improperly applied to the electromagnetic chuck. When the 5a is powered, the electromagnetic chuck 5a is continuously powered. The control unit 1 can control the power source 4 to replenish the backup power source 6 and cut off the connection between the power source 4 and the backup power source 6 when the backup power source 6 is full; or The backup power source 6 is supplemented with power by an external power source to ensure that the backup power source 6 can be fully charged at all times in case of emergency. When the power source 4 is exhausted, or abnormal operation occurs, such as overload, low voltage, overheating, poor electrical connection, or the power source controller is cut off by the power source controller, the When the normal adsorption of the electromagnetic chuck 5a has an influence, the control unit controls the backup power source 6 to supply power to the electromagnetic chuck 5a, for example: actively disconnecting the power source 4 from the electromagnetic chuck 5a, and establishing the standby power. The source 6 is coupled to the electromagnetic chuck 5a to ensure normal operation of the electromagnetic chuck 5a; at the same time, the control unit 1 can also be powered by cutting off the connection between the power source 4 and the motor 2 The source 4 implements protection; and/or sends an alert to the operator through the human-machine interface. The backup power source 6 can use the following power source types, namely: various lithium-based batteries such as a ternary lithium battery and a lithium iron phosphate battery; a fuel cell; a nickel cadmium battery, a nickel hydride battery, a nickel battery, and the like. Battery; and various other mobile power sources.

In the use of the cordless magnetic drill, sometimes the working surface is not clean, such as dust or foreign matter, etc., so that the electromagnetic chuck 5a cannot be well absorbed with the working surface, so that the cordless magnetic drill is slipped or dropped. In order to avoid this, a magnetic field sensor 7 can be added to the cordless magnetic drill, and the magnetic field sensor 7 is connected to the control unit 1 for detecting the operating state of the electromagnetic chuck 5a and operating the magnetic chuck 5a. The status data is transmitted to the control unit 1 for processing, and the control unit 1 determines whether the magnetic field of the electromagnetic chuck 5a is normal according to the operating state data, that is, whether the cordless magnetic drill is in a good adsorption state with the working surface. For example, when starting the cordless magnet During the drilling, if the magnetic field sensor 7 detects that the magnetic field of the electromagnetic chuck 5a is insufficient to maintain good adsorption between the working surface and the working surface, the control unit 1 will prevent the power source 4 from establishing a connection with the motor 2. , thereby ensuring that the cordless magnetic drill can only start the drilling operation only after being in good adhesion with the working surface; and during the use of the cordless magnetic drill, when the magnetic field sensor 7 detects the electromagnetic When the magnetic field of the suction cup 5a is insufficient, the control unit 1 will also cut off the connection between the power source 4 and the motor 1 in time to prevent the electromagnetic chuck 5a from slipping off the working surface, resulting in the entire cordless magnetic seat being drilled. The drilling tool is in danger of rotating, and/or a warning is sent to the operator via the human-machine interface.

In order to further ensure the reliable fixing of the cordless magnetic drill on the working surface, it may further comprise a mechanical safety device, which may be in the form of, for example, a chain, a rope, a pliers or the like, to prevent the cordless magnetic drill from being accidentally prevented. Slip off or fall.

Example 2

The structure of the cordless magnetic drill in this embodiment is very similar to that of Embodiment 1, and only differences between them will be described below. As shown in FIG. 3, in this embodiment, the magnetic base 5 uses an electric permanent magnet suction cup 5b, which does not need to be powered by the power source 4 during normal operation, but only opens and closes. When the control unit 1 needs to send an on/off electric signal thereto, for example, an operator can input a switching instruction to the electric permanent magnet chuck 5b through the human-machine interaction interface, and then the control unit 1 The magnetic field of the electric permanent magnet chuck 5b is turned on or off according to the received command.

Since the electric permanent magnet chuck 5b can permanently generate a magnetic field without any power, in this embodiment, no abnormality occurs in the operating state of the power source 4, for example, energy is about to be exhausted, or an overload occurs, In the case of low pressure, overheating, etc., the normal adsorption of the electric permanent magnet chuck 5b is not affected, so that the use of the cordless magnetic drill can be sufficiently ensured. Correspondingly, when the energy of the power source 4 is about to be exhausted, it is no longer necessary to cut off the connection between the power source 4 and the motor 2 in advance to reserve power for the normal adsorption of the electric permanent magnet chuck 5b; In the power source controller described in Embodiment 1, it is no longer necessary to design the control unit to react to the abnormal condition of the power source 4 before the power source controller operates; The standby power source 6; when the magnetic field sensor 7 described in Embodiment 1 is used, the magnetic field sensor 7 is accordingly used to detect the magnetic field state of the electric permanent magnet chuck 5b.

The remaining modules in this embodiment and the working methods of the corresponding modules are the same as in Embodiment 1.

Example 3 The structure of the cordless magnetic drill in this embodiment is very similar to that of Embodiment 2, and only differences between them will be described below. As shown in FIG. 4, in this embodiment, the magnetic base 5 uses a permanent magnet suction cup 5c, which does not need to be powered by the power source 4, and does not need to be controlled by the control unit 1, so that it can be The magnetic field is continuously generated spontaneously, thereby reliably adsorbing the cordless magnetic drill on the work surface. The suction and release action between the permanent magnet chuck 5c and the working surface can be realized by a simple mechanical structure directly provided on the permanent magnet chuck 5c, which is well known in the art, when the cordless magnetic drill is ready to start work and at the end of the operation. Therefore, the mechanical control background of the above adsorption and release actions may be integrated on the human-computer interaction interface, so that the operator can directly adsorb the permanent magnet sucker 5c on the human-computer interaction interface. Release the control of the action.

Since the permanent magnet chuck 5c can also continuously generate a magnetic field without any power, the detection object will become the permanent magnet chuck 5c except when the magnetic field sensor 7 described above is used. The remaining modules in this embodiment and the working methods of the corresponding modules are the same as in Embodiment 2.

Example 4

The structure of the cordless magnetic drill in this embodiment is very similar to that of Embodiment 1, and only differences between them will be described below. As shown in FIG. 5, in this embodiment, a permanent magnet chuck 5d having a relatively small adsorption force is added to the electromagnetic chuck 5a described in Embodiment 1, and the electromagnetic chuck 5a and the electromagnetic chuck 5a The permanent magnet chuck 5d collectively serves as the magnetic base 5 of the cordless magnetic drill. The adsorption force of the permanent magnet chuck 5d should be selected as follows: When the electromagnetic chuck 5a completely loses the magnetic field due to the power failure, the permanent magnet chuck 5d can still ensure that the cordless magnetic drill is reliably adsorbed on the working surface. Here, the control mode of the electromagnetic chuck 5a is the same as that described in the first embodiment, and the control method of the permanent magnet chuck 5d is the same as that of the permanent magnet chuck 5c described in the third embodiment.

Since the permanent magnet chuck 5d can permanently generate a magnetic field without any power, in this embodiment, similar to the case of Embodiment 2, regardless of any abnormality of the operating state of the power source 4, such as energy When it is about to be exhausted, or when overload, low pressure, overheating, etc. occur, the normal adsorption of the permanent magnet chuck 5d is not affected, so that the use of the cordless magnetic drill can be sufficiently ensured. Correspondingly, when the energy of the power source 4 is about to be exhausted, it is not necessary to cut off the connection between the power source 4 and the motor 1 in advance to reserve power for the normal adsorption of the permanent magnet chuck 5d; In the power source controller described in 1, it is no longer necessary to design the control unit to react to the abnormal state of the power source 4 before the power source controller operates; it is also unnecessary to provide the embodiment 1 described above. The backup power source 6; when the magnetic field transmission described in Embodiment 1 is used In the case of the sensor 7, the magnetic field sensor 7 is accordingly used to detect the superimposed magnetic field state of the electromagnetic chuck 5a and the permanent magnet chuck 5d.

In addition to the above various control functions, the control unit 1 described in the present invention can also add various auxiliary functions such as the following: overload protection of the motor 2, on the human-computer interaction interface The operator is provided with the function of artificially adjusting the rotational speed of the motor 2, and the module of the cordless magnetic drill is overheated to realize automatic drilling without any manual operation, and the working illumination of the cordless magnetic drill is performed. Control and so on, and all the functions described can be realized by using existing hardware conditions in combination with existing programming means, and the implementation method thereof is not mentioned.

In summary, the cordless magnetic drill of the present invention is no longer limited by an external power source during use, thereby improving the safety of use on the one hand, and greatly improving the convenience of use of the magnetic drill on the other hand. It can perform various difficult drilling operations at any work place without being affected by the working environment, which is conducive to improving work efficiency and simplifying work processes. In addition, the present invention also provides an improved design of the magnetic base of the cordless magnetic drill, so that the magnetic base can reliably ensure that the cordless magnetic drill is firmly adsorbed on the working surface to prevent unnecessary use of the operator. Danger, thereby further improving the safety of use of the cordless magnetic drill of the present invention to a level that is sufficiently reliable.

While the invention has been described with respect to the embodiments of the present invention, it is understood that the scope of the invention is defined by the appended claims. A person skilled in the art can make various changes or modifications to these embodiments without departing from the spirit and scope of the invention, and such changes and modifications fall within the scope of the invention.

Claims

Claim

A cordless magnetic drill, characterized in that it comprises:

control unit;

a motor connected to the control unit;

a gearbox connected to the motor for adjusting an output speed of the motor;

a power source coupled to the control unit for providing power to the motor;

a magnetic base connected to the control unit;

The control unit is for controlling the operation of the motor, the power source, and the magnetic base, and for establishing or cutting a connection between the power source and the motor.

2. The cordless magnetic drill according to claim 1, wherein the magnetic base is an electromagnetic chuck, and the power source is further configured to supply power to the electromagnetic chuck.

3. The cordless magnetic drill according to claim 2, wherein the control unit is configured to cut off a connection between the power source and the motor when the power source is exhausted, and/or issue a warning .

4. The cordless magnetic drill according to claim 2, wherein the control unit is configured to cut off the connection between the power source and the motor when the power source energy is exhausted, and operate the electromagnetic chuck The voltage is reduced to maintain the minimum voltage required to adhere the cordless magnetic drill to the work surface, and/or,

3 Lilu Tudou.

5. The cordless magnetic drill according to claim 2, wherein the cordless magnetic drill further comprises a power source controller coupled to the power source for cutting off the power source when the power source operates abnormally The power output, the control unit is further provided with a protection module for cutting off the connection between the power source and the motor and/or issuing a warning before the power source controller operates abnormally.

6. The cordless magnetic drill according to claim 2, wherein the cordless magnetic drill further comprises a power source controller connected to the power source and the control unit for acquiring an operating state of the power source. And transmitting to the control unit, according to the operating state, the control unit cuts off the connection between the power source and the motor when the power source is abnormal, and/or issues a warning.

7. The cordless magnetic drill according to claim 2, wherein the cordless magnetic drill further comprises a backup power source coupled to the control unit for providing power to the electromagnetic chuck, the control unit for When the power source is operating abnormally or the energy is exhausted, the standby power source is controlled to power the electromagnetic chuck, and/or a warning is issued.

The cordless magnetic drill according to claim 7, wherein the control unit is configured to control the backup power source to supply power to the electromagnetic chuck and cut off the power when the power source is abnormal or the energy is exhausted. The source is coupled to the motor, and/or, a warning is issued.

9. The cordless magnetic drill according to claim 7, wherein the control unit controls the power source to supplement the standby power source, or supplements the backup power source with an external power source.

10. The cordless magnetic drill according to claim 7, wherein the backup power source is a combination of one or more of the following power sources: lithium-based battery, nickel-cadmium battery, nickel-hydrogen battery, nickel Battery, fuel cell.

11. The cordless magnetic drill according to claim 1, wherein the magnetic base is an electric permanent magnet chuck.

12. The cordless magnetic drill according to claim 11, wherein the cordless magnetic drill further comprises a power source controller coupled to the power source for cutting off the power source when the power source operates abnormally Power output.

13. The cordless magnetic drill according to claim 11, wherein the cordless magnetic drill further comprises a power source controller coupled to the power source and the control unit for acquiring an operating state of the power source. And transmitting to the control unit, according to the operating state, the control unit cuts off the connection between the power source and the motor when the power source is abnormal, and/or issues a warning.

The cordless magnetic drill according to any one of claims 1 to 2, wherein the cordless magnetic drill further comprises a power source sensor connected to the power source and the control unit, Acquiring the operating state of the power source and transmitting to the control unit, according to the operating state, the control unit cuts off the connection between the power source and the motor when the power source is abnormal, and/or issues a warning.

The cordless magnetic drill according to any one of claims 1 to 2, wherein the cordless magnetic drill further comprises a magnetic field sensor connected to the control unit for acquiring the operation of the magnetic base And transmitting to the control unit, the control unit is configured to prevent a connection between the power source and the motor, or cut off between the power source and the motor when the magnetic field of the magnetic seat is insufficient according to the operating state Join, and/or, issue a warning.

The cordless magnetic drill according to any one of claims 1 to 2, wherein the cordless magnetic drill further comprises a mechanical safety device for fixing the cordless magnetic drill to a work surface. .

The cordless magnetic drill according to any one of claims 1 to 2, wherein the power source is a combination of one or more of the following power sources: a lithium-based battery, a nickel-cadmium battery Nickel hydrogen Battery, nickel battery, fuel cell.

The cordless magnetic drill according to any one of claims 1 to 2, wherein the control unit has a human-machine interaction interface for an operator to input a control command to the control unit, and is used for The operator is warned when the cordless magnetic drill is working abnormally.

19. A cordless magnetic drill, characterized in that it comprises:

control unit;

a motor connected to the control unit;

a gearbox connected to the motor for adjusting an output speed of the motor;

a power source coupled to the control unit for providing power to the motor;

Permanent magnet sucker;

The control unit is operative to control operation of the motor and the power source and to establish or disconnect a connection between the power source and the motor.

The cordless magnetic drill according to claim 19, wherein the cordless magnetic drill further comprises a magnetic field sensor connected to the control unit for acquiring an operating state of the permanent magnet chuck and transmitting to the control unit The control unit is configured to prevent a connection between the power source and the motor, or disconnect the power source from the motor when the magnetic field of the permanent magnet chuck is insufficient according to the operating state, and/or warning.

The cordless magnetic drill according to claim 19, wherein the cordless magnetic drill further comprises an electromagnetic chuck connected to the control unit, the control unit further configured to control operation of the electromagnetic chuck, A power source is also used to power the electromagnetic chuck.

The cordless magnetic drill according to claim 21, wherein the cordless magnetic drill further comprises a magnetic field sensor connected to the control unit for acquiring the permanent magnet chuck and the operating state of the electromagnetic chuck and transmitting Providing to the control unit, the control unit is configured to prevent a connection between the power source and the motor, or cut off the power source and the motor when the permanent magnet chuck and the electromagnetic chuck have insufficient superimposed magnetic field according to the operating state A connection between, and/or, issues a warning.

The cordless magnetic drill according to claim 19 or 21, wherein the cordless magnetic drill further comprises a power source controller connected to the power source for cutting off the power when the power source is abnormally operated. The power output of the source.

The cordless magnetic drill according to claim 19 or 21, wherein the cordless magnetic drill further comprises a power source controller connected to the power source and the control unit, for acquiring the power source. Running state and transmitting to the control unit, the control unit is based on the operating state When the source is abnormal, the connection between the power source and the motor is cut off, and/or a warning is issued.

The cordless magnetic drill according to claim 19 or 21, wherein the cordless magnetic drill further comprises a power source sensor connected to the power source and the control unit for acquiring the operation of the power source. The state is transmitted to the control unit, and the control unit cuts off the connection between the power source and the motor when the power source is abnormal according to the operating state, and/or issues a warning.

26. A cordless magnetic drill according to claim 19 or 21, wherein the cordless magnetic drill further comprises mechanical safety means for securing the cordless magnetic drill to the work surface.

The cordless magnetic drill according to claim 19 or 21, wherein the power source is a combination of one or more of the following power sources: lithium-based battery, nickel-cadmium battery, nickel-hydrogen battery, nickel Resignation battery, fuel cell.

The cordless magnetic drill according to claim 19 or 21, wherein the control unit has a human-machine interaction interface for the operator to input a control command to the control unit, and is used for drilling the cordless magnetic seat Warn the operator when the work is abnormal.